CN109314410A - Electric blower - Google Patents
Electric blower Download PDFInfo
- Publication number
- CN109314410A CN109314410A CN201780034849.2A CN201780034849A CN109314410A CN 109314410 A CN109314410 A CN 109314410A CN 201780034849 A CN201780034849 A CN 201780034849A CN 109314410 A CN109314410 A CN 109314410A
- Authority
- CN
- China
- Prior art keywords
- magnetic yoke
- yoke portion
- another party
- tooth
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Suction Cleaners (AREA)
- Linear Motors (AREA)
Abstract
The present invention provides a kind of electric blower, can be improved efficiency, and can more precisely set position of the tooth front end side relative to rotor.Cylindric rear magnetic yoke (31) has side's magnetic yoke portion (41) and another party's magnetic yoke portion (42).One side's magnetic yoke portion (41) be located between a pair of of tooth (32a, 32b) and a pair of of tooth (32c, 32d) between and it is mutually opposed, also, circumferential lengths are mutually roughly equal.Another party's magnetic yoke portion (42) is between side's a pair of tooth (32a, 32b) and another party's a pair of tooth (32c, 32d) and mutually opposed, also, circumferential lengths are mutually roughly equal.One side's magnetic yoke portion (41) is formed by magnetic circuit and is greater than the magnetic circuit for being formed in another party's magnetic yoke portion (42).
Description
Technical field
Embodiments of the present invention are related to a kind of electric blower, have brushless motor, which has and make and wind
The stator core of the rotor rotation of fan connection.
Background technique
In the past, the brushless fan motor for such as being used for electric dust collector etc. is, brushless as centrifugal fan is rotated
Motor uses the brushless motor of single-phase 4 pole.The brushless motor of single-phase 4 pole is to have cylindric stator core, the stator iron
Core has front end side 4 teeth opposed with the periphery of rotor, these teeth substantially uniformly configure in the circumferential, thus make it is brushless
Motor minimize in the case where, narrow on the inside of stator core, it is not easy to by machinery around tooth auto reeling coil or
Person increases coiling rate.
Existing technical literature
Patent document
Patent document 1: Japan's registration No. 3193357 bulletin of utility model
Summary of the invention
Subject to be solved by the invention
In the composition of above patent document 1, keep the stator core of 2 c-types for being respectively provided with tooth at both ends opposed and
It uses, thus, it is possible to improve the automation of coiling, coiling rate, and can be improved efficiency.
However, carrying out the positioning of each stator core by resin component in the case where this composition, therefore it is not easy to mention
Position precision of the high tooth front end side relative to rotor.
The problem to be solved by the present invention is to provide a kind of electric blower, efficiency can be improved, and can be more high-precision
Position of the degree ground setting tooth front end side relative to rotor.
Means for solving the problems
The electric blower of embodiment has fan and makes the brushless motor of single-phase 4 pole of fan rotation.It is brushless
The stator that motor has the rotor connecting with fan and has stator core and rotate rotor.Stator core has: 4
Tooth, one end is opposed with around rotor, is wound with coil respectively with the state of insulation；And cylindric rear magnetic yoke, by tooth
Another side between be interconnected and form magnetic circuit.The rear magnetic yoke has side's magnetic yoke portion and another party's magnetic yoke portion.One side's magnetic
Yoke portion is to be located between each pair tooth and mutually opposed, also, forms size mutually roughly equal magnetic circuit.Another party
Magnetic yoke portion be, it is between side's a pair of tooth and another party's a pair of tooth and mutually opposed, also, form size mutually substantially phase
Deng magnetic circuit.Then, the magnetic circuit for being formed in side's magnetic yoke portion is greater than the magnetic circuit for being formed in another party's magnetic yoke portion.
Detailed description of the invention
Fig. 1 is the top view for indicating the stator core of electric blower of first embodiment.
Fig. 2 (a) is the top view for indicating to have the ibid stator of stator core, is (b) perspective view of stator.
Fig. 3 is the exploded perspective view of ibid electric blower.
Fig. 4 (a) is the perspective view for indicating to be same as above electric blower from a direction, is (b) to indicate electricity from another direction
The perspective view of dynamic air blower.
Fig. 5 is the top view for indicating the stator core of electric blower of second embodiment.
Fig. 6 is the top view for indicating the stator core of electric blower of third embodiment.
Specific embodiment
Hereinafter, being illustrated referring to composition of the attached drawing to first embodiment.
In Fig. 1 to Fig. 4,11 indicate electric blower.The electric blower 11 has brushless motor 13.The electronic air blast
Machine 11 has the centrifugal fan 14 as fan.In addition, the electric blower 11 has the diffuser 15 as cowling panel.The electricity
Dynamic air blower 11 is the brushless fan motor that centrifugal fan 14 is covered with by fan guard 16.Then, the electric blower 11 is for example
Mainly used in attracting the dedusters such as dust catcher, hair dryer (blower).
Brushless motor 13 is the brushless motor of single-phase 4 pole.Also, the brushless motor 13 has motor body portion 23, the horse
The rotor 22 for having stator 21 up to main part 23 and being rotated by the stator 21.In addition, the brushless motor 13 has frame
24.Motor body portion 23 is accommodated in the frame 24.Then, which is controlled dynamic by control circuit (not shown)
Make.In addition, hereinafter, up and down direction shown in FIG. 1 and left and right directions are set as electric blower 11 (brushless motor 13)
Axial 13 side of brushless motor of electric blower 11 is set as rear (shown in Fig. 4 (a) etc. by up and down direction and left and right directions
The side arrow RR), 14 side of centrifugal fan is set as front (side arrow FR shown in Fig. 4 (a) etc.) and is illustrated.
Stator 21 constitutes the fixed magnetic pole for rotating rotor 22.The stator 21 has stator core 25.In addition, the stator 21
Has stator insulation portion 26.Also, the stator 21 has coil 27.Then, which has terminal 28.
Stator core 25 is that the laminal magnetic substance such as electromagnetic steel plate is laminated and is formed to have substantially certain thickness
Plate.The stator core 25 has rear magnetic yoke 31.The stator core 25 has multiple teeth 32.In the present embodiment, for tooth
32 are set with first to fourth tooth 32a~32d.In addition, the stator core 25 has mounting portion 33.In addition, the stator core 25
It is divided by cutting part 35 multiple.In the present embodiment, which is divided into respectively by left and right as substantially semicircle
Two parts of arcuation.That is, the stator core 25 is, such as 2 (sides and another being punched out by punch forming etc.
Just) magnetic yoke body (iron core member) 36,37 is integrally linked by cutting part 35 and is constituted.
Rear magnetic yoke 31 is, will be interconnected between tooth 32, and being formed will be generated by the coil 27,27 for being wound in tooth 32,32
The magnetic circuit that magnetically (passing through magnetic flux) combines between fixed magnetic pole.The rear magnetic yoke 31 has: in upper and lower a pair first and second
41 (the side's magnetic of side's magnetic yoke portion being respectively formed between upper and lower a pair of of third and the 4th tooth 32c, 32d between tooth 32a, 32b
Yoke portion 41a, 41b)；And between first and second tooth 32a, 32b and third and the 4th tooth 32c, 32d, i.e. in left and right
First and the 4th be respectively formed between tooth 32a, 32d and between second and third tooth 32b, 32c of left and right it is another
Square magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b).That is, on the rear magnetic yoke 31, using first to fourth tooth 32a~32d as side
Boundary and be sequentially formed with 4 regions (magnetic yoke portion 41a, 42a, 41b, 42b) in the circumferential.
One side's magnetic yoke portion 41a, 41b between first and second tooth 32a, 32b and third and the 4th tooth 32c,
Magnetic circuit is formed between 32d.41a, 41b are respectively formed as arc-shaped in these side magnetic yoke portions, in the lateral direction opposed to each other
Configuration.In addition, these side magnetic yoke portions 41a, 41b are each set to substantially certain width dimensions.
Another party's magnetic yoke portion 42a, 42b between second and third tooth 32b, 32c and the 4th and first tooth 32d,
Magnetic circuit is formed between 32a.42a, 42b are respectively formed as substantially arc-shaped in these another party's magnetic yoke portions, in above-below direction, i.e. with one
It is configured opposed to each other on the direction of square magnetic yoke portion 41a, 41b intersection (orthogonal).In addition, in the present embodiment, it is another at these
Cutting part 35 is each configured on one side's magnetic yoke portion 42a, 42b.Also, 42a, 42b are formed as in these another party's magnetic yoke portions, in addition to
Other than cutting part 35, substantially certain width dimensions are set to, also, the position near tooth 32 is (opposed with mounting portion 33
Position) on inner circumferential side gradually broaden.
Then, these side magnetic yokes portion 41a, 41b and another party's magnetic yoke portion 42a, 42b are that circumferential lengths are (along rear magnetic yoke
The size in 31 circumferential direction) and width dimensions (along the size in the radial direction of rear magnetic yoke 31) it is mutually different.Tool
To say to body, the circumferential lengths and width dimensions of side's magnetic yoke portion 41a, a 41b are mutually roughly equal, another party's magnetic yoke portion 42a,
The circumferential lengths and width dimensions of 42b are mutually roughly equal.In addition, side's magnetic yoke portion 41a, 41b and another party's magnetic yoke portion
The thickness of 42a, 42b are roughly equal.Then, the circumferential lengths of side's magnetic yoke portion 41a, a 41b are set shorter than another party's magnetic yoke
The circumferential lengths of portion 42a, 42b, the width dimensions of side's magnetic yoke portion 41a, a 41b be set greater than another party's magnetic yoke portion 42a,
The width dimensions of 42b.Therefore, side's magnetic yoke portion 41a, 41b be compared with another party's magnetic yoke portion 42a, 42b, average cross-section (=
(volume)/(circumferential lengths)) it is big, magnetic resistance is small.In other words, the magnetic circuit for being formed in these side magnetic yoke portions 41a, 41b is set
Greater than the magnetic circuit for being formed in another party's magnetic yoke portion 42a, 42b.
Here, in the present embodiment, side's magnetic yoke portion 41a, a 41b is formed as, relative to another party's magnetic yoke portion 42a,
42b is outside (peripheral side) difference in the central axis side of rear magnetic yoke 31 i.e. inside (inner circumferential side) and with central axis side opposite side
Broaden width.That is, the outer diameter of side's magnetic yoke portion 41a, a 41b is greater than the outer diameter of another party's magnetic yoke portion 42a, 42b, side's magnetic
The internal diameter of yoke portion 41a, 41b are less than the internal diameter of another party's magnetic yoke portion 42a, 42b.
Tooth 32 forms fixed magnetic pole by coil 27 (Fig. 2 (a) and Fig. 2 (b)).These teeth 32 are the first tooth 32a and
Two tooth 32b are magnetically pairs of, and third tooth 32c and the 4th tooth 32d are magnetically pairs of.In addition, these teeth 32 are, from rear magnetic yoke 31
Inner peripheral portion is towards central axis side, that is, side rotor 22 (Fig. 2 (a)), respectively along being arranged radially projectingly.That is, the tooth 32 is along rear magnetic
Yoke 31 is formed radially as strip, and base end part 44 and rear magnetic yoke 31 link, and front end 45 is prominent with free end shape.Therefore, exist
The opening portion of fan-shaped is formed between tooth 32 and rear magnetic yoke 31.Specifically, in first and second tooth 32a, 32b and rear magnetic yoke
Between 31 (side's magnetic yoke portion 41a) and between third and the 4th tooth 32c, 32d and rear magnetic yoke 31 (side's magnetic yoke portion 41b),
Be respectively formed with a side opening portion 47, second and third tooth 32b, 32c and rear magnetic yoke 31 (another party's magnetic yoke portion 42a) it
Between and the 4th and first between tooth 32d, 32a and rear magnetic yoke 31 (another party's magnetic yoke portion 42b), be respectively formed with another party
Opening portion 48.In addition, the front end 45 of each tooth 32 constitutes the magnetic action face opposed with the outer peripheral surface of rotor 22.It uses in the magnetic action face
In making the fixed magnetic pole for being formed in first to fourth tooth 32a~32d by coil 27 act on rotor 22, relative to rotor 22
Outer peripheral surface separates small gap and separates.
Also, the circumferential lengths of side's magnetic yoke portion 41a, a 41b due to mutually it is equal, the first and second tooth 32a,
The distance between base end part 44,44 of the distance between base end part 44,44 of 32b and third and the 4th tooth 32c, 32d is mutually
It is roughly equal.Equally, the circumferential lengths of another party's magnetic yoke portion 42a, 42b are due to mutually equal, and second and third tooth
The distance between base end part 44,44 of 32b, 32c, with the 4th and first tooth 32d, 32a the distance between base end part 44,44
It is mutually roughly equal.Then, the circumferential lengths of side's magnetic yoke portion 41a, a 41b are shorter than the circumferential direction length of another party's magnetic yoke portion 42a, 42b
Degree, therefore the distance between base end part 44,44 of first and second tooth 32a, 32b and third and the 4th tooth 32c, 32d
The distance between base end part 44,44, less than second and the distance between the base end part 44,44 of third tooth 32b, 32c and
4th and first tooth 32d, 32a the distance between base end part 44,44.In other words, pairs of tooth 32 each other with than with it is another
The close mode of the distance between square tooth 32 configures.
Mounting portion 33 is, stator core 25 (stator 21) is fixed relative to frame 24 (Fig. 3).The mounting portion 33 is with four directions
Shape is protrusively provided in the outside (peripheral side) of rear magnetic yoke 31, and is configured at the first to fourth respective cardinal extremity of tooth 32a~32d
Near portion.As a result, in the present embodiment, 4 mounting portions 33 are set with separated from each other in the circumferential direction of rear magnetic yoke 31.This
Outside, base end part 44 of each mounting portion 33 relative to each tooth 32 is located at another party's magnetic yoke portion side 42a, 42b.That is, each mounting portion
33 are located at the peripheral part of another party's magnetic yoke portion 42a, 42b.Then, on each mounting portion 33, axially (front and back are provided with
To) perforation mounting hole 33a.Screw 51 of the insertion as installing component, the screw 51 and 24 side of frame in mounting hole 33a
It screws togather, thus stator core 25 (stator 21) is fixed in frame 24 (Fig. 3).In addition, in the present embodiment, each mounting hole
33a is configured as, and a part is overlapped with the circular arc after extending the peripheral part of side's magnetic yoke portion 41a, a 41b.Therefore, mounting portion 33
The overhang of (radial direction) outward of the peripheral part relative to rear magnetic yoke 31 is inhibited.
In the present embodiment, cutting part 35 is set in the circumferential central portion of another party's magnetic yoke portion 42a, 42b.The segmentation
Portion 35 is, such as a side is the recess portion 54 of recess, and another party is the protrusion 55 chimeric with the recess portion 54.In the present embodiment,
Such as it is set with recess portion 54 in the one end of magnetic yoke body 36, it is set with protrusion 55 in another side, in the other end of magnetic yoke body 36
Side is set with recess portion 54, and side is set with protrusion 55 at one end.Then, by the cutting part 35, magnetic yoke body 36,37 is by 55 phase of protrusion
For recess portion 54, axially (front-rear direction) insertion links.
Stator insulation portion 26 is that coil 27 and terminal 28 etc. insulate relative to stator core 25.The stator is exhausted
Edge 26 is formed by the synthetic resin etc. of insulating properties.The stator insulation portion 26 is installed on stator core 25.For example, the stator insulation
Portion 26 is formed relative to stator core 25.In the present embodiment, which is respectively arranged at magnetic yoke body 36,37.
Then, which has the coiling maintaining part 57 of hold-in winding 27.In addition, the stator insulation portion 26 has holding end
The terminal retention portion 58 of son 28.Also, the stator insulation portion 26 has the upper and lower insulative body portion 59 for being overlapped in rear magnetic yoke 31.
Coiling maintaining part 57 is formed as square tube shape (bobbin shape), along central axis insert have first to fourth tooth 32a~
32d.These coiling maintaining parts 57 are located at the inner circumferential side of insulative body portion 59 and along radially projecting as a result, and be located at first to
Around 4th tooth 32a~32d.
Terminal retention portion 58 is formed as the square box-like of rear openings, in the present embodiment, the number with terminal 28
Amount is correspondingly provided with 4.Then, terminal retention portion 58 is, in the rear side weight of side's magnetic yoke portion 41a, 41b with rear magnetic yoke 31
Folded position (on side's magnetic yoke portion 41a, a 41b) is each configured with each pair, and a pair of terminal positioned at side's magnetic yoke portion 41a is kept
Portion 58 (first and Second terminal maintaining part 58a, 58b) in pairs, positioned at a pair of terminal maintaining part 58 of side's magnetic yoke portion 41b
(third and forth terminal maintaining part 58c, 58d) is pairs of.
Insulative body portion 59 is formed as semicircular arc-shaped, from side's magnetic yoke portion 41 of rear magnetic yoke 31 (side's magnetic yoke portion 41a,
It 41b) continuously arrives near the central part of another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b).
Coil 27 is to form fixed magnetic pole in first to fourth tooth 32a~32d.The coil 27 is in coiling maintaining part 57
Surrounding's multilayer-wound coiling and formed, the coiling be with insulating film covering electric conductor surface and formed.In this reality
Apply in mode, for example, be configured at first and third tooth 32a, 32c coil 27 (first and second coil 27a, 27b) by phase
Homopolarity (such as the pole N or the pole S) is formed in first and third tooth 32a, 32c, is configured at second and the 4th tooth 32b, 32d
Coil 27 (third and the 4th coil 27c, 27d) is by polarity and the coil 27,27 for being configured at first and third tooth 32a, 32c
Different same poles (such as the pole S or the pole N) is formed in second and the 4th tooth 32b, 32d.
Terminal 28 is for control circuit to be electrically connected with each coil 27.The terminal 28 is kept by terminal retention portion 58, and from
Side is prominent backward for the terminal retention portion 58.Rear side of the terminal 28 in side's magnetic yoke portion 41a, 41b with stator core 25 as a result,
The position (on side's magnetic yoke portion 41a, a 41b) of overlapping is each configured with each pair.Then, it is being located at the one of side's magnetic yoke portion 41a
To a pair of terminal 28 (first and configured in terminal retention portion 58 (first and Second terminal maintaining part 58a, 58b)
Two-terminal 28a, 28b) in pairs, in a pair of terminal maintaining part 58 positioned at side's magnetic yoke portion 41b, (third and forth terminal are kept
Portion 58c, 58d) on a pair of terminal 28 (third and forth terminal 28c, 28d) for being configured it is pairs of.
Rotor 22 shown in Fig. 3 is permanent-magnet rotor.The rotor 22 has: the output shaft connecting with centrifugal fan 14
That is rotary shaft 61；The rotor subject i.e. magnet part 62 being provided integrally at around the rotary shaft 61.In addition, the rotor 22 via
A pair of bearings 64 (only illustrating one) is maintained as to rotate relative to frame 24.Also, pass through rotation sensor (position
Set detection unit) 65 detect the rotor 22 rotation.
Rotary shaft 61 is located at along the position on the central axis of frame 24.The front end side of the rotary shaft 61 is relative to frame 24
It protrudes forwards, is connected with centrifugal fan 14 in the front end side outstanding.
There is permanent magnet (not shown) in the embedment of magnet part 62, being adjacently formed in direction of rotation (circumferential direction) has
Mutually different polar magnetic pole (rotary pole).As a result, in the magnet part 62, the pole N and the pole S is successively alternately in a rotational direction
Configuration and it is pairs of.
Bearing 64 is installed on the one end and another side of rotary shaft 61, and is individually fixed in frame 24, by rotor 22
It remains and rotates freely relative to frame 24.
Rotation sensor 65 is to be detected by the polarity of the magnetic pole to rotor 22 (magnet part 62), thus right
The rotation position (rotation angle) of rotor 22 is detected, for example, Hall IC etc..As shown in Fig. 2 (a), rotation detection
Sensor 65 is configured at the position between second and third tooth 32b, 32c.As a result, the rotation sensor 65 be configured at
The corresponding position another party's magnetic yoke portion 42a of rear magnetic yoke 31.
Fig. 3 is returned to, frame 24 is, for example, the metal parts of the light weight of aluminium or magnesium etc., such as is closed by BMC (FRP) etc.
It is formed at resin etc..The frame 24 has a box frame body 67.In addition, the frame 24 has another party's frame body 68.Then, frame
Frame 24 is configured to, by the way that these sides and another party's frame body 67,68 are fixed by the mutually front and back of screw 51, thus in the past
After accommodate motor body portion 23 with clamping.
One box frame body 67 is located at the front side of frame 24.One box frame body 67 has contour part 71.In addition, a box frame body
67 have a square shaft bearing portion 72.Also, a box frame body 67 has multiple side linking parts 73.On a box frame body 67, point
Hua Fen there be frame aspiration openings portion 74.
Contour part 71 is formed as circular.The contour part 71 has the outer diameter roughly equal with diffuser 15.At this
Contour part 71, on the coupling position linked with side's linking part 73, be provided with for by stator core 25 (stator 21) in week
The limiting unit 76 positioned upwards.The limiting unit 76 is located at the inner peripheral portion of contour part 71, and along front-rear direction, i.e. contour part
The axial direction of 71 (frame 24 (a box frame bodies 67)), is set as the channel-shaped clipped by pairs of rib.In addition, the limiting unit 76 and fixed
The mounting portion 33 of sub- iron core 25 is arranged in correspondence with.Therefore, in the present embodiment, which is provided with 4, and in gabarit
It is arranged separated from each other in the circumferential direction in portion 71.In addition, thus making stator core 25 by being fitted into mounting portion 33 in each limiting unit 76
(stator 21) can not rotate in the circumferential.Also, in each limiting unit 76, to the mounting hole of each mounting portion 33 of stator core 25
The screw part 76a for the boss-shaped that the screw 51 inserted in 33a is screwed togather is continuously provided with side's linking part 73 respectively.
One square shaft bearing portion 72 is held 64 by accepting a square shaft and is supported rotor 22 to rotate freely.In a square shaft bearing portion 72
It is provided with the through hole of circular hole, it is (not shown) for brushless motor 13 to be fixed in the longitudinal direction with diffuser 15
The fixed bodies such as screw are inserted in the through hole.
One side's linking part 73 is protrusively provided and with radial by a square shaft bearing portion 72 and outside respectively from a square shaft bearing portion 72
Wide portion 71 is linked.In the present embodiment, 4 side linking parts 73 are provided with.
Frame aspiration openings portion 74 contour part 71, a square shaft bearing portion 72 and adjacent side's linking part 73,73 it
Between be open.These frame aspiration openings portions 74 are opposed to be open with diffuser 15.
In addition, another party's frame body 68 is located at the rear side of frame 24.Another party's frame body 68 has another party's bearing portion 82.
In addition, another party's frame body 68 has multiple another party's linking parts 83.
Another party's bearing portion 82 is supported rotor 22 by undertaking another party's bearing 64 to rotate freely.
In the present embodiment, 4 another party's linking parts 83 are provided with.The front end side of another party's linking part 83, respectively to
Front side is 67 lateral bend of a box frame body.In the front end side of these another party's linking parts 83, insert has screw 51.Then, to another
Square linking part 83 front end side insert screw 51 inserted into the mounting hole 33a of the mounting portion 33 of stator core 25 and with a side
The screw part 76a of frame body 67 is screwed togather, and a side and another party's frame body 67,68 are fixed to each other as a result,.
Then, as shown in Fig. 4 (b), in the state that another party's frame body 68 and a box frame body 67 are secured,
Connect in the contour part 71 of a box frame body 67, another party's bearing portion 82 of another party's frame body 68 and adjacent another party
Between knot 83,83, it is respectively divided out and opens the frame exhaust that the air flowed into brushless motor 13 is exhausted to outside
Oral area 84.A pair of frames exhaust port portion 84 in these frame exhaust port portions 84, mutually opposed, terminal 28 are located at difference
The position of exposing.
Control circuit has the driver for example including translation circuit and carries out the control of PWM control to the driver
Portion, and be electrically connected with each terminal 28 and rotation sensor 65.Then, which is configured to, to passing through driver
The direction of the electric current flowed to the coiling of coil 27, conduction time are controlled, thus in accordance with time-switching via Fig. 2 (a) institute
The first to fourth coil 27a~27d shown produces first to fourth tooth 32a~32d of each stator core 25 of stator 21 respectively
Raw magnetic pole.
Centrifugal fan 14 shown in Fig. 3 is to be rotated by brushless motor 13, thus by air from center side to peripheral side
It is rectified.The centrifugal fan 14 is such as light weights such as synthetic resin or aluminium excellent as heat resistance and abrasion performance
The component of metal etc. is formed.In addition, the centrifugal fan 14 has fan main body 86.Also, the centrifugal fan 14 has multiple wind
Fan leaf 87.
Fan main body 86 is to be fixed integrally to the part of the end of rotary shaft 61 of brushless motor 13.The fan main body 86
Be formed as from one end (front end) towards the other end (rear end) gradually expanding cylindrical shape.
Fan blade 87 is protrusively provided in fan main body 86 and brushless motor 13 (diffuser 15) opposite side i.e. front side.
These fan blade 87 can also for example form the circinate being gradually curved from the center of fan main body 86 to periphery.These fans
Blade 87 is configured to, and is separated from each other in the circumferential, by the rotation to a direction of centrifugal fan 14 by air from center
Lateral peripheral side is rectified.
Diffuser 15 is to be rectified to the air after being rectified from centrifugal fan 14 and make it to the inside of brushless motor 13
It flows into.The diffuser 15 can also have outer frame 91.The diffuser 15 can also have rectification main part 92.In addition, the expansion
It dissipates device 15 and has multiple straightener(stator) blades 93.
Outer frame 91 is formed to have the annular shape of the diameter dimension roughly equal with the contour part 71 of frame 24.
Rectification main part 92 is formed in the position of 91 inside of outer frame.The rectification main part 92 can also have construction opening
95.In addition, the rectification main part 92 can also have positioning region 96.Also, the rectification main part 92 can also have as solid
Determine the through-hole 97 of hole portion.
Construction opening 95 is to be fitted into for a square shaft bearing portion 72 of brushless motor 13 and expose rotary shaft 61.The installation is opened
Mouth 95 is for example formed as round.
In the present embodiment, straightener(stator) blade 93 will link between outer frame 91 and rectification main part 92 and be formed.Then,
Become the wind path portion for penetrating through diffuser 15 in the longitudinal direction between these straightener(stator) blades 93.
Positioning region 96 is to position brushless motor 13 relative to diffuser 15.Each positioning region 96 is, in diffuser 15
Rear portion, side i.e. opposed with brushless motor 13, be arranged along channel-shaped in the front-back direction in the inner peripheral portion of outer frame 91.Structure
Become, thus a part (side's linking part 73) of the frame 24 by being fitted into brushless motor 13 respectively in the positioning region 96 makes
Brushless motor 13 can not rotate in the circumferential relative to diffuser 15.As a result, in the present embodiment, it is arranged on diffuser 15
There is 4 positioning regions 96 (only diagram a part).
Through-hole 97 is for diffuser 15 and brushless motor 13 to be fixed by fixed body.Each through-hole 97 be set to nothing
The through hole of one box frame body 67 of brush motor 13 aligns, and is inserted into the fixed body of the through hole for example by being screwed from rear side,
Thus brushless motor 13 (a box frame body 67) is fixed to each other with diffuser 15.
A part of centrifugal fan 14 is covered and is installed on diffuser 15 by fan guard 16.The fan guard 16 is formed to have
Roughly equal diameter dimension is substantially cylindric with the frame 24 (contour part 71) of diffuser 15 and brushless motor 13.So
Afterwards, there is the air entry 99 for exposing the central portion of centrifugal fan 14 in 16 upper opening of fan guard, the fan guard 16 is with from the suction
The mode that port 99 gradually expands tilts.
Next, being illustrated referring to attached drawing to the assembling sequence of the electric blower 11 of above-mentioned first embodiment.
Firstly, assembling brushless motor 13.That is, each magnetic yoke body 36,37 in the stator core 25 good for preforming is logical
It crosses produced by insert molding etc. to be integrally formed after stator insulation portion 26, be wound respectively in the coiling maintaining part 57 in stator insulation portion 26
Coiling and form coil 27.At this point, stator core 25 is divided into magnetic yoke body 36,37 and 35 side opening of cutting part, therefore can
Coiling is automatically wound to coiling maintaining part 57 using bobbin winder device (not shown).Later, the end of coiling is kept to terminal
Portion 58 imports, and terminal 28 is installed on these terminal retention portions 58 and terminal 28 is connected with coiling, by terminal 28 and coil 27
Electrical connection.Then, it slides protrusion 55 relative to recess portion 54 and is inserted into and keeps magnetic yoke body 36,37 chimeric, thus constitute magnetic yoke
The stator core 25 that body 36,37 has integrally linked, and complete stator 21.
Then, for a box frame body 67 of the frame 24 for making preforming good relative to diffuser 15, becoming links a side
The state chimeric with positioning region 96 respectively of portion 73, and fixed body is inserted into through hole and is screwed togather with through-hole 97, thus by a box
Frame body 67 is fixed on diffuser 15.Later, make stator 21 relative to a box frame body 67, the mounting portion 33 of stator core 25 is divided
Not Cha Ru limiting unit 76 and positioned in the circumferential, also, magnet part 62 and bearing 64 will be installed relative to rotary shaft 61
And constitute rotor 22 rotary shaft 61, between the tooth 32 of stator 21 to a square shaft bearing portion 72 of a box frame body 67 be inserted into,
And the bearing of the rotor 22 64 is held in a square shaft bearing portion 72.At this point, making rotation sensor 65 and 22 (magnet of rotor
Portion 62) periphery close to being opposed to configure.
Then, by the limiting unit 76 of the front end side of another party's linking part 83 of another party's frame body 68 and a box frame body 67
Contraposition, insertion screw 51 are simultaneously tight from the screw part 76a of the mounting hole 33a of stator core 25 and a box frame body 67 progress screw thread
Gu being thus fixed in a manner of clipping stator 21 and rotor 22 by a side and another party's chassis body 67,68.At this
Under state, each terminal 28 exposes from each frame exhaust port portion 84.
Then, pass through the peace such as indentation in the rotary shaft 61 from the brushless motor 13 outstanding of construction opening 95 of diffuser 15
Centrifugal fan 14 is filled, and covers 14 ground of centrifugal fan and fan guard 16 is pressed into or is adhesively fixed in diffuser 15, it is thus complete
At electric blower 11.
The electric blower 11 being so assembled into is to be carried out by rotation position of the rotation sensor 65 to rotor 22
Detection, also, according to the rotation position, by control circuit to the sense of current flowed in the coiling of each coil 27 and
Conduction time is controlled, and is thus sequentially formed magnetic pole in first to fourth tooth 32a~32d, is passed through these magnetic poles and rotor 22
Magnetic pole between repulsion, attract make rotor 22 rotate.At this point, in stator core 25, side's magnetic yoke portion 41a, 41b relative to
Another party's magnetic yoke portion 42a, 42b are big width, also, circumferential lengths are shorter, thus compared with another party's magnetic yoke portion 42a, 42b,
Flowing magnetic flux is easy in side's magnetic yoke portion 41a, a 41b.Therefore, by the first tooth 32a, side's magnetic yoke portion 41a and the second tooth
The cricoid magnetic circuit that 32b is formed, and the cricoid magnetic formed by third tooth 32c, side's magnetic yoke a portion 41b and the 4th tooth 32d
Road (the first magnetic circuit), greater than the cricoid magnetic circuit formed by the second tooth 32b, another party's magnetic yoke portion 42a and third tooth 32c, with
And the cricoid magnetic circuit (the second magnetic circuit) formed by the 4th tooth 32d, another party's magnetic yoke portion 42b and the first tooth 32a, substantially
Almost not formed second magnetic circuit, and only become the first magnetic circuit.As a result, making the magnetic of first to fourth tooth 32a~32d generation strength
Pole, brushless motor 13 are expeditiously driven, and the centrifugal fan 14 thus connecting with the rotor 22 of the brushless motor 13 is with high speed
(for example, about 100000rpm) is rotated.Therefore, it is generated using the rotation of the centrifugal fan 14 by electric blower 11
Negative pressure sucks air from air entry 99 to electric blower 11.Then, the air of the sucking, using centrifugal fan 14 by
Rectified around the centrifugal fan 14, and rectified from diffuser 15 and from wind path portion via frame aspiration openings portion 74 to brushless horse
Flow into, and pass through in a side of the stator of brushless motor 13 21 and another party opening portion 47,48 up to 13, thus to stator 21 with
And rotor 22 is cooled down, and by each coil 27 (coiling) and each terminal in the frame of the brushless motor 13 24
28 are cooled down, and are vented from frame exhaust port portion 84.
As described above, one side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) is formed as according to above-mentioned first embodiment,
Relative to another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b), to rear magnetic yoke 31 central axis side and with the central axis
Side opposite side broadens width respectively.Here, the feelings increased in the width dimensions for making side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b)
Under condition, such as in the case where increasing to the central axis side of rear magnetic yoke 31, weight can be inhibited while ensuring width dimensions
Increase, to central axis side opposite side increase in the case where, opening portion can be made to become larger and make the coiling of coil 27
Space increase and be easy carry out coiling, therefore the central axis side by being formed as rear magnetic yoke 31 and with the central axis side opposite side
Broaden width respectively, and thus, it is possible to purposes, the purposes according to electric blower 11, is adjusted, sets to these balance.
In addition, in the above-described first embodiment, stator core 25 can also be formed as, such as shown in fig. 5 second real
It is such to apply mode, makes side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) relative to (another party's magnetic yoke portion of another party's magnetic yoke portion 42
42a, 42b), it is that inside broadens width to the central axis side of rear magnetic yoke 31.In this case, it can be ensured that the width in side's magnetic yoke portion 41
Size is spent, and compared with making the case where width in side's magnetic yoke portion 41 is to the expansion of the central axis side opposite side of rear magnetic yoke 31
Compared with being able to suppress the increase of weight.
Equally, stator core 25 can also be formed as, such as third embodiment shown in fig. 6 is such, makes side's magnetic yoke
Portion 41 (side's magnetic yoke portion 41a, a 41b) relative to another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b), to rear magnetic yoke 31
Central axis side opposite side, i.e. outside broaden width.In this case, it can be ensured that the width dimensions in side's magnetic yoke portion 41, and
Compared with the case where expanding the width in side's magnetic yoke portion 41 to the central axis side of rear magnetic yoke 31, it is able to suppress a side opening portion
The reduction of 47 area can make the space of the coiling of coil 27 increase and be easy to carry out coiling, and manufacturing improves.
At least one embodiment crossed from the description above, stator core 25 are to make to be formed in side's magnetic yoke portion 41 (one
Square magnetic yoke portion 41a, 41b) magnetic circuit be greater than and be formed in the magnetic circuit of another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b), because
This can make tooth 32 form stronger magnetic pole, and can be improved the efficiency of brushless motor 13, the i.e. efficiency of electric blower 11.This
Outside, stator core 25 is to be protrusively provided with teeth 32, therefore the mutual positional relationship quilt of tooth 32 on cylindric rear magnetic yoke 31
It is fixed as centainly, such as compared with the case where configuring the stator core of pairs of c-type opposed to each other, it being capable of higher precision
Ground sets position of the front end side of tooth 32 relative to rotor 22.
Specifically, by making the width dimensions in side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) be greater than another party's magnetic
The width dimensions in yoke portion 42 (another party's magnetic yoke portion 42a, 42b), thus, it is possible to easily will be formed in a 41 (side of side's magnetic yoke portion
Magnetic yoke portion 41a, 41b) magnetic circuit relative to be formed in another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b) magnetic circuit set
It obtains greatly.
Therefore, it is capable of increasing another party of the position in another party's magnetic yoke portion 42 that is formed in (another party's magnetic yoke portion 42a, 42b)
Opening portion 48 can make effectively to open by another party by the rotation of centrifugal fan 14 to the air that brushless motor 13 sucks
Oral area 48 can efficiently cool down in motor body portion 23, and efficiency caused by being able to suppress due to fever reduces.
In addition, by making the circumferential lengths in side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) be shorter than another party's magnetic yoke portion
The circumferential lengths of 42 (another party's magnetic yoke portion 42a, 42b), thus, it is possible to easily will be formed in 41 (side's magnetic yoke of side's magnetic yoke portion
Portion 41a, 41b) magnetic circuit be set to relative to the magnetic circuit for being formed in another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b)
Greatly.
In addition, by the way that rear magnetic yoke 31 is divided into multiple magnetic yoke bodies 36,37, thus, it is possible to relative to each magnetic yoke body 36,
37 on tooth 32 convolute coil 27 coiling.As a result, in the case where having minimized rear magnetic yoke 31, compared in rear magnetic yoke 31
Keep it is cylindric it is constant in the state of space it is smaller and be not easy to carry out coiling, since coiling can be carried out to magnetic yoke body 36,37,
Thus it can also correspond to the auto reeling such as based on machinery, manufacturing improves.
Also, magnetic circuit is smaller compared with side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b), magnetic flux be difficult to flow it is another
The position in one side's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b), is divided into multiple magnetic yoke bodies 36,37 for rear magnetic yoke 31, therefore
Mainly it is difficult to via the magnetic pole that side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) is formed in tooth 32 by point of magnetic yoke body 36,37
The obstruction of portion 35 is cut, the influence to efficiency is less, also, cutting part 35 helps to increase 42 (another party's magnetic yoke of another party's magnetic yoke portion
Portion 42a, 42b) magnetic resistance, therefore the magnetic circuit easy to form for making to be formed in side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) with
The magnetic circuit for being formed in another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b) compares the opposite composition to become larger.
Also, it will be used to be inserted into screw 51 and stator core 25 be fixed on frame 24, diffuser 15 by screw 51
Mounting hole 33a is configured at the magnetic compared with side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b) near the base end part 44 of each tooth 32
Road is smaller, magnetic flux is difficult to the side another party's magnetic yoke portion 42 (another party's magnetic yoke portion 42a, 42b) flowed, thus mainly via side's magnetic
Yoke portion 41 (side's magnetic yoke portion 41a, a 41b) and the magnetic pole for being formed in tooth 32 is difficult to by the area as caused by mounting hole 33a, broad-ruler
Very little reduction interferes, and the influence to efficiency is less.Therefore, the position of screw 51 can be made (another closer to another party's magnetic yoke portion 42
One side's magnetic yoke portion 42a, 42b) width center side, can be to the close configuration in the central axis side of rear magnetic yoke 31, therefore install
Portion 33 is difficult to prominent to the outside of rear magnetic yoke 31, and stator core 25 and frame 24 can be made to miniaturise.
In addition, the terminal 28 that will be electrically connected with each coil 27, in circumferential lengths than 42 (another party of another party's magnetic yoke portion
Magnetic yoke portion 42a, 42b) in small side's magnetic yoke portion 41 (side's magnetic yoke portion 41a, a 41b), relative to the side magnetic yoke portion 41 (one
Square magnetic yoke portion 41a, 41b) the state configuration of insulation can thus, it is possible to shorten the wiring from the coiling of coil 27 to terminal 28
Further suppress the reduction of efficiency.
Then, the rotation sensor 65 that will test the rotation of rotor 22, in circumferential lengths than side's magnetic yoke portion 41 (one
Square magnetic yoke portion 41a, 41b) long and magnetic circuit is smaller and magnetic flux is difficult to (another party's magnetic yoke portion of another party's magnetic yoke portion 42 flowed
42a, 42b) position, be opposed to configure with the periphery of rotor 22, thus rotation sensor 65 is difficult to by coil 27
The influence in magnetic field, it can be ensured that sensing detection precision.
As a result, it is possible to make the miniaturization of brushless motor 13 and lightweight, additionally it is possible to use the electronic of the brushless motor 13
Air blower 11 also minimizes and lightweight.
Illustrate several embodiments of the invention, but these embodiments are intended only as example and prompt, and unexpectedly
Interest field to be limited.These new embodiments can be implemented with various other ways, can in the model for not departing from main idea
Enclose interior carry out various omissions, substitutions and changes.These embodiments and modifications thereof are contained in the range and main idea of invention, and wrap
Contained in invention and its equivalent range documented by claims.
Claims (8)
1. a kind of electric blower has fan and makes the brushless motor of single-phase 4 pole of fan rotation, which is characterized in that
Above-mentioned brushless motor has:
Rotor is connect with said fans；And
Stator has stator core, rotates above-mentioned rotor,
Said stator iron core has:
4 teeth, one end is opposed with around above-mentioned rotor, is wound with coil respectively with the state of insulation；And
Cylindric rear magnetic yoke will be interconnected between the another side of these teeth and form magnetic circuit,
Above-mentioned rear magnetic yoke has:
One side's magnetic yoke portion, be located at it is between each pair above-mentioned tooth and mutually opposed, also, formed size mutually it is roughly equal
Magnetic circuit；And
Another party's magnetic yoke portion, it is between a pair of above-mentioned tooth of a side and a pair of above-mentioned tooth of another party and mutually opposed, also, formed
The mutually roughly equal magnetic circuit of size,
The magnetic circuit for being formed in one side magnetic yoke portion is greater than the magnetic circuit for being formed in above-mentioned another party's magnetic yoke portion.
2. electric blower as described in claim 1, which is characterized in that
The width dimensions in one side's magnetic yoke portion are greater than the width dimensions in another party's magnetic yoke portion.
3. electric blower as claimed in claim 2, which is characterized in that
One side's magnetic yoke portion is formed as, and broadens width relative to another party's magnetic yoke portion in the central axis side of rear magnetic yoke.
4. electric blower as claimed in claim 2, which is characterized in that
One side's magnetic yoke portion is formed as, and broadens width relative to another party's magnetic yoke portion in the central axis side opposite side with rear magnetic yoke.
5. electric blower as claimed in claim 2, which is characterized in that
One side's magnetic yoke portion is formed as, relative to another party's magnetic yoke portion in the central axis side of rear magnetic yoke and opposite with the central axis side
Side broadens width.
6. such as electric blower described in any one of claim 1 to 5, which is characterized in that
Rear magnetic yoke is divided into multiple magnetic yoke bodies.
7. electric blower as claimed in claim 6, which is characterized in that
Rear magnetic yoke is divided into multiple magnetic yoke bodies at the position in another party's magnetic yoke portion.
8. electric blower as described in any one of claim 1 to 7, which is characterized in that
Have for being inserted into installing component and by the mounting hole of above-mentioned installing component fixed stator iron core,
Above-mentioned mounting hole is located at another party's magnetic yoke portion side near the base end part of each tooth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016182353A JP6791692B2 (en) | 2016-09-16 | 2016-09-16 | Electric blower |
| JP2016-182353 | 2016-09-16 | ||
| PCT/JP2017/021221 WO2018051589A1 (en) | 2016-09-16 | 2017-06-07 | Electric blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109314410A true CN109314410A (en) | 2019-02-05 |
| CN109314410B CN109314410B (en) | 2021-01-05 |
Family
ID=61619125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780034849.2A Active CN109314410B (en) | 2016-09-16 | 2017-06-07 | Electric blower |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20190214858A1 (en) |
| EP (1) | EP3514919A4 (en) |
| JP (1) | JP6791692B2 (en) |
| CN (1) | CN109314410B (en) |
| MY (1) | MY193102A (en) |
| WO (1) | WO2018051589A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019142776A1 (en) | 2018-01-18 | 2019-07-25 | ミネベアミツミ株式会社 | Stator structure and resolver |
| JP7026529B2 (en) * | 2018-01-18 | 2022-02-28 | ミネベアミツミ株式会社 | Stator structure and resolver |
| CN108900015B (en) * | 2018-08-30 | 2020-03-17 | 珠海格力电器股份有限公司 | Iron core splicing block for motor, stator iron core and manufacturing method thereof, stator, motor and household appliance |
| JP7190368B2 (en) * | 2019-02-26 | 2022-12-15 | 東芝ライフスタイル株式会社 | Brushless motor and electric blower |
| WO2021135994A1 (en) * | 2019-12-31 | 2021-07-08 | 广东美的白色家电技术创新中心有限公司 | Stator and motor |
| WO2021196481A1 (en) | 2020-04-02 | 2021-10-07 | 广东美的环境电器制造有限公司 | Rotation driving mechanism of air supply apparatus, air supply apparatus, and household appliance |
| KR20210133544A (en) * | 2020-04-29 | 2021-11-08 | 엘지전자 주식회사 | Fan Motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018051589A1 (en) | 2018-03-22 |
| CN109314410B (en) | 2021-01-05 |
| EP3514919A1 (en) | 2019-07-24 |
| US20190214858A1 (en) | 2019-07-11 |
| JP6791692B2 (en) | 2020-11-25 |
| EP3514919A4 (en) | 2020-01-29 |
| MY193102A (en) | 2022-09-26 |
| JP2018046721A (en) | 2018-03-22 |
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